Define biostratigraphic dating

22-Dec-2018 00:31

Fossils are important for working out the relative ages of sedimentary rocks.Throughout the history of life, different organisms have appeared, flourished and become extinct.He defined and named units according to their lithology first.Lithology refers to the physical characteristics of a rock, such as color, mineralogy and grain size. It was not until about 15 years later that rock units would be identified on the basis of fossils alone.

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Suppose you find a fossil at one place that cannot be dated using absolute methods.Soon, Smith was able to assign any fossil-bearing rock its stratigraphic position using the knowledge he gained from previous study.

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